In 009 Galaxy Fireballs you have to take the brush and draw a circle. As
long as you hold down your mouse-button the circle grows. You need to
avoid the fireballs, otherwise your circle stops growing and you'll lose
a life. As long as your circle is growing your level progress is
increasing. If the bar at the top of the screen is full the level is
finished. The brushes at the top right of the screen shows you how often
you can start drawing a new circle per level.